Hairbrush



FIG. 1 is a perspective view of the hairbrush of the present invention;

FIG. 2 is a bottom plan view;

FIG. 3 is a top plan view;

FIGS. 4 and 5 are left and right side elevational views; and,

FIGS. 6 and 7 are end elevational views. 

The ornamental design for a hairbrush, as shown and described. 